The TDK B72220S381K101 is a high-performance through-hole mounted varistor designed for robust surge protection in electronic circuits. Manufactured by TDK CORPORATION in China, this non-linear resistor offers reliable voltage suppression across a wide operating range, ensuring durability and safety in various applications.
Key Features
Wide operating voltage range from 11 V RMS to 1100 V RMS
High surge current ratings up to 8 kA (8/20 µs waveform)
No derating required up to 85°C ambient temperature
Epoxy resin coating with UL 94 V-0 flame retardant properties
Standards approvals include UL, CSA, VDE, CQC, and IEC
Bulk delivery mode with options for taped versions on reel or Ammo pack
Technical Specifications
Maximum Ratings (TA = 85°C)
Type
V RMS (V)
V DC (V)
i max (8/20 µs) (A)
W max (2 ms) (J)
P max (W)
Untaped
S20K381K101
505
381
2000
10.0
0.20
Electrical Characteristics
Ordering Code
V v (1 mA) (V)
∆V v (1 mA) (%)
v c,max (i) c V
i c (A)
C typ (1 kHz) (pF)
B72220S381K101
505
±10
36
10.0
23000
Additional Details
Part Number: B72220S381K101
Manufacturer: TDK CORPORATION
Country of Origin: CN
Unit of Measure: Each (EA)
ECCN: EAR99
Package Type: Through Hole
For detailed technical data, please refer to the Datasheet.
Disclaimer
Please review cautions and warnings in the datasheet before integrating this component into your design. The datasheet was not processed; for more detailed specifications, please search the internet using the part number.
Note: The product image displayed is a standard reference image. Actual product appearance may vary. For the most accurate and up-to-date representation, we recommend searching the part number online.
{"id":10003903611197,"title":"B72220S381K101","handle":"b72220s381k101","description":"\u003ch3\u003eProduct Description: TDK B72220S381K101 Varistor\u003c\/h3\u003e\n\u003cp\u003eThe TDK B72220S381K101 is a high-performance through-hole mounted varistor designed for robust surge protection in electronic circuits. Manufactured by TDK CORPORATION in China, this non-linear resistor offers reliable voltage suppression across a wide operating range, ensuring durability and safety in various applications.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide operating voltage range from 11 V RMS to 1100 V RMS\u003c\/li\u003e\n\u003cli\u003eHigh surge current ratings up to 8 kA (8\/20 µs waveform)\u003c\/li\u003e\n\u003cli\u003eNo derating required up to 85°C ambient temperature\u003c\/li\u003e\n\u003cli\u003eEpoxy resin coating with UL 94 V-0 flame retardant properties\u003c\/li\u003e\n\u003cli\u003eStandards approvals include UL, CSA, VDE, CQC, and IEC\u003c\/li\u003e\n\u003cli\u003eBulk delivery mode with options for taped versions on reel or Ammo pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Ratings (TA = 85°C)\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eV RMS (V)\u003c\/th\u003e\n\u003cth\u003eV DC (V)\u003c\/th\u003e\n\u003cth\u003ei max (8\/20 µs) (A)\u003c\/th\u003e\n\u003cth\u003eW max (2 ms) (J)\u003c\/th\u003e\n\u003cth\u003eP max (W)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUntaped\u003c\/td\u003e\n\u003ctd\u003eS20K381K101\u003c\/td\u003e\n\u003ctd\u003e505\u003c\/td\u003e\n\u003ctd\u003e381\u003c\/td\u003e\n\u003ctd\u003e2000\u003c\/td\u003e\n\u003ctd\u003e10.0\u003c\/td\u003e\n\u003ctd\u003e0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eElectrical Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eOrdering Code\u003c\/th\u003e\n\u003cth\u003eV v (1 mA) (V)\u003c\/th\u003e\n\u003cth\u003e∆V v (1 mA) (%)\u003c\/th\u003e\n\u003cth\u003ev c,max (i) c V\u003c\/th\u003e\n\u003cth\u003ei c (A)\u003c\/th\u003e\n\u003cth\u003eC typ (1 kHz) (pF)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB72220S381K101\u003c\/td\u003e\n\u003ctd\u003e505\u003c\/td\u003e\n\u003ctd\u003e±10\u003c\/td\u003e\n\u003ctd\u003e36\u003c\/td\u003e\n\u003ctd\u003e10.0\u003c\/td\u003e\n\u003ctd\u003e23000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart Number: B72220S381K101\u003c\/li\u003e\n\u003cli\u003eManufacturer: TDK CORPORATION\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: CN\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n\u003cli\u003eECCN: EAR99\u003c\/li\u003e\n\u003cli\u003ePackage Type: Through Hole\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor detailed technical data, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-tdk\/tdk-b72220s381k101.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eDisclaimer\u003c\/h3\u003e\n\u003cp\u003ePlease review cautions and warnings in the datasheet before integrating this component into your design. The datasheet was not processed; for more detailed specifications, please search the internet using the part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNote: The product image displayed is a standard reference image. Actual product appearance may vary. For the most accurate and up-to-date representation, we recommend searching the part number online.\u003c\/strong\u003e\u003c\/p\u003e","published_at":"2025-08-05T14:42:12+05:30","created_at":"2025-08-05T14:42:12+05:30","vendor":"Waldom Electonics","type":"Resistors","tags":["505V","Linear","Non","Resistors","STD_IMG","TDK","WLDM"],"price":4435,"price_min":4435,"price_max":4435,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50551909843261,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B72220S381K101","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"B72220S381K101","public_title":null,"options":["Default Title"],"price":4435,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"B72220S381K101","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_84c1f0cb-9604-40c8-8677-39a59151089e.jpg?v=1754385133"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_84c1f0cb-9604-40c8-8677-39a59151089e.jpg?v=1754385133","options":["Title"],"media":[{"alt":null,"id":45680530522429,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1024,"width":1024,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_84c1f0cb-9604-40c8-8677-39a59151089e.jpg?v=1754385133"},"aspect_ratio":1.0,"height":1024,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_84c1f0cb-9604-40c8-8677-39a59151089e.jpg?v=1754385133","width":1024}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description: TDK B72220S381K101 Varistor\u003c\/h3\u003e\n\u003cp\u003eThe TDK B72220S381K101 is a high-performance through-hole mounted varistor designed for robust surge protection in electronic circuits. Manufactured by TDK CORPORATION in China, this non-linear resistor offers reliable voltage suppression across a wide operating range, ensuring durability and safety in various applications.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide operating voltage range from 11 V RMS to 1100 V RMS\u003c\/li\u003e\n\u003cli\u003eHigh surge current ratings up to 8 kA (8\/20 µs waveform)\u003c\/li\u003e\n\u003cli\u003eNo derating required up to 85°C ambient temperature\u003c\/li\u003e\n\u003cli\u003eEpoxy resin coating with UL 94 V-0 flame retardant properties\u003c\/li\u003e\n\u003cli\u003eStandards approvals include UL, CSA, VDE, CQC, and IEC\u003c\/li\u003e\n\u003cli\u003eBulk delivery mode with options for taped versions on reel or Ammo pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Ratings (TA = 85°C)\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eV RMS (V)\u003c\/th\u003e\n\u003cth\u003eV DC (V)\u003c\/th\u003e\n\u003cth\u003ei max (8\/20 µs) (A)\u003c\/th\u003e\n\u003cth\u003eW max (2 ms) (J)\u003c\/th\u003e\n\u003cth\u003eP max (W)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUntaped\u003c\/td\u003e\n\u003ctd\u003eS20K381K101\u003c\/td\u003e\n\u003ctd\u003e505\u003c\/td\u003e\n\u003ctd\u003e381\u003c\/td\u003e\n\u003ctd\u003e2000\u003c\/td\u003e\n\u003ctd\u003e10.0\u003c\/td\u003e\n\u003ctd\u003e0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eElectrical Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eOrdering Code\u003c\/th\u003e\n\u003cth\u003eV v (1 mA) (V)\u003c\/th\u003e\n\u003cth\u003e∆V v (1 mA) (%)\u003c\/th\u003e\n\u003cth\u003ev c,max (i) c V\u003c\/th\u003e\n\u003cth\u003ei c (A)\u003c\/th\u003e\n\u003cth\u003eC typ (1 kHz) (pF)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB72220S381K101\u003c\/td\u003e\n\u003ctd\u003e505\u003c\/td\u003e\n\u003ctd\u003e±10\u003c\/td\u003e\n\u003ctd\u003e36\u003c\/td\u003e\n\u003ctd\u003e10.0\u003c\/td\u003e\n\u003ctd\u003e23000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart Number: B72220S381K101\u003c\/li\u003e\n\u003cli\u003eManufacturer: TDK CORPORATION\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: CN\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n\u003cli\u003eECCN: EAR99\u003c\/li\u003e\n\u003cli\u003ePackage Type: Through Hole\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor detailed technical data, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-tdk\/tdk-b72220s381k101.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eDisclaimer\u003c\/h3\u003e\n\u003cp\u003ePlease review cautions and warnings in the datasheet before integrating this component into your design. The datasheet was not processed; for more detailed specifications, please search the internet using the part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNote: The product image displayed is a standard reference image. Actual product appearance may vary. For the most accurate and up-to-date representation, we recommend searching the part number online.\u003c\/strong\u003e\u003c\/p\u003e"}
